Question

4.) what are the two haploid cells? what does haploid mean?
the two haploid cells are...
haploid means...

Explanation:

Haploid cells contain a single set of chromosomes, unlike diploid cells which have two sets. In most sexually reproducing organisms, the primary haploid cells are the gametes (sex cells) that fuse during fertilization to form a diploid zygote.

Answer:

The two haploid cells are... sperm cells (male gametes) and egg cells (female gametes)
Haploid means... a cell that contains only one complete set of chromosomes (denoted as $n$), with half the genetic material of a diploid body cell.